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Modbus Server – BACnet Client
TM
Intesis
2 BACnet interface
This section describes the BACnet part of the Intesis's configuration and functionality.
Description
BACnet server devices are represented in the form of Devices holding Objects, normally every physical device
corresponds to a logical one. The Objects can be of different type depending on the data and functionality the
represent: Analog Input, Analog output, Digital Input, etc. Up to 23 different types of objects. Note that Outputs are
objects meant to be written in the direction BACnet network to the device, and the opposite for Inputs (they are meant
to offer status information of the BACnet device). Value objects are bidirectional.
Every Object has different properties. The most meaningful one, and the one used to read and write values by Intesis
is the Present Value property, which indicates the real value of the object. Every Object of the same type in a Device
is identified with its associated Object Instance.
These are the possible BACnet objects supported by Intesis:
Object Type
Property
Analog Input
Present Value
Analog Output
Present Value
Analog Value
Present Value
Binary Input
Present Value
Binary Output
Present Value
Binary Value
Present Value
Multistate Input
Present Value
Multistate Output
Present Value
Multistate Value
Present Value
Accumulator
Present Value
Loop
Present Value
Every signal is identified with its associated Device + Object Type + Object Instance.
Intesis simulates a virtual BACnet device inside the BACnet system acting as client device in the BACnet system.
The communication with the rest of the BACnet devices is done via the Ethernet port of the gateway which
implements the BACnet protocol.
Intesis implements a single BACnet object of its own: this is, its BACnet Device Object, containing its BACnet Device
Identifier and basic properties of Intesis as BACnet device (name, firmware version, etc).
Using the configuration tool with Intesis it's possible to scan the BACnet network for available devices and their
objects, which can later be directly added to your configuration. This facilitates the configuration process, avoiding to
enter them manually.
BACnet/IP and BACnet MSTP physical layers are supported. Only one physical layer can be used at a time. This is,
if communicating to BACnet using BACnet/IP, BACnet MSTP cannot be used, and viceversa.
© HMS Industrial Networks S.L.U - All rights reserved
This information is subject to change without notice
Description
Analog signal. i.e. Ambient temperature.
Analog signal.
Analog signal. i.e. Temperature set point value.
Digital signal. i.e. ON/OFF status.
Digital signal. i.e. ON/OFF command.
Digital signal. i.e. ON/OFF status/command.
Multistate signal. i.e. Working mode status.
Multistate signal.
Multistate signal. i.e. Working mode command.
User Manual r1.3 EN
URL
https://www.intesis.com
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